PatchTheCVECVE-2021-4301: A vulnerability was found in slackero phpwcms up to 1.9.26 and classified as critical
CVE-2021-4301 is a medium-severity flaw (CVSS 6.3) affecting phpwcms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
A vulnerability was found in slackero phpwcms up to 1.9.26 and classified as critical. Affected by this issue is some unknown functionality. The manipulation of the argument $phpwcms['db_prepend'] leads to sql injection. The attack may be launched remotely. Upgrading to version 1.9.27 is able to address this issue. The patch is identified as 77dafb6a8cc1015f0777daeb5792f43beef77a9d. It is recommended to upgrade the affected component. VDB-217418
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 6.3 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.7% (top 46%) |
| CISA exploited list | No |
| Weakness | CWE-89 |
| Published | 2023-01-07 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2021-4301?
phpwcms: upgrade to 1.9.27. Exact commands for each OS are on this page.
Is CVE-2021-4301 being exploited?
CVE-2021-4301 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2021-4301 affect?
CVE-2021-4301 affects phpwcms. Severity is medium (CVSS 6.3). A vulnerability was found in slackero phpwcms up to 1.9.26 and classified as critical. Affected by this issue is some unknown functionality. The manipulation of the argument $phpwcms['db_prepend'] leads to sql injection. The attack may be l
How urgent is CVE-2021-4301?
Priority 36/100. No elevated risk signals yet.
Related CVEs
- CVE-2025-5499 HIGH 7.3 UPGRADE A vulnerability classified as critical has been found in slackero phpwcms up to 1.9.45/1.10.8
- CVE-2025-5498 MEDIUM 5.5 UPGRADE A vulnerability was found in slackero phpwcms up to 1.9.45/1.10.8
- CVE-2025-5497 MEDIUM 6.3 UPGRADE A vulnerability was detected in slackero phpwcms up to 1.9.45/1.10.8
- CVE-2021-4302 LOW 3.5 UPGRADE A vulnerability was found in slackero phpwcms up to 1.9.26
- CVE-2021-47783 MEDIUM 5.4 DOWNGRADE Phpwcms 1.9.30 contains a file upload vulnerability that allows authenticated attackers to upload malicious SV